[PATCH v4] include: Add some math declarations.

[Piotr Caban]

Hi Daniel,

On 4/9/22 18:13, Daniel Lehman wrote:
> -__int64 CDECL llrint(double x)
> +long long CDECL llrint(double x)
long long is not guaranteed to have correct size. That's why __int64 is 
used instead.

Thanks,
Piotr